The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 2001
Filed:
Jul. 16, 1999
Malcolm Waddoups, Westfield, NJ (US);
Rolfe J. Hartley, Cranbury, NJ (US);
Taisuke Miyoshi, Yokohama, JP;
Abstract
A molybdenum-free lubricating oil composition exhibiting improved fuel economy and fuel economy retention properties, which comprises: (a) a base stock oil compound of at least 50 wt. % mineral oil, the base stock oil having a viscosity of 4.0-5.5 mm,/s at 100° C., 95 wt. % or more saturates, 25 wt. % or less napthenics, a NOACK volatility of 15.9% or less, a kV of 4.0-5.5 mm,/s at 100° C. and a viscosity index of at least 120; (b) at least one calcium detergent and (c) at least one organic friction modifier, wherein the composition has a NOACK volatility of about 15 wt. % or less and contains from about 0.058 to 0.58 wt. % calcium from the calcium detergent.